Can the president use the military to arrest anyone he wants, keep that person away from a judge and jury, and lock him up for as long as he wants? In the Senate's dark and terrifying vision of the Constitution, he can. Last week ... the Senate Armed Services Committee decided to meet in secret. Behind closed doors, it drafted an amendment to a bill appropriating money for the Pentagon. The amendment would permit the president to use the military for law enforcement purposes in the United States. Essentially, this legislation would enable the president to divert from the criminal justice system, and thus to divert from the protections of the Constitution, any person he pleases. And that person, under this terrifying bill, would have no recourse to a judge to require the president either to file charges against him or to set him free. The Fifth Amendment to the Constitution says, No person shall be deprived of life, liberty, or property, without due process of law." Note, the Founders used the word "person." Thus, the requirement of due process must be accorded to all human beings held by the government -- not just Americans, not just nice people, but all persons. If this legislation becomes law, it will be dangerous for anyone to be right when the government is wrong. It will be dangerous for all of us. Just consider what any president could get away with. Who would he make disappear first? Might it be his political opponents? Might it be you?